cjGuestbook v1.3 - XSS

[luny@xxxxxxxxxxxxxxx]

cjGuestbook v1.3

Homepage:
http://cmj-php.opanelhosting.com

Affected files:

* posting in the guestbook

XSS vuln with cookie disclosure:

cjGuestbook uses bbcode, and since theres a vulnerability in early editions of 
bbcode we can achieve our XSS example.

For a PoC put in as your comment:
[img]javascript:alert(document.cookie)[/img]

Screenshots:
http://www.youfucktard.com/xsp/cjgb1.jpg
http://www.youfucktard.com/xsp/cjgb2.jpg